Cult favorite is low budget but powerfully frightening. Space experiments set off a high level of radiation that makes the newly dead return to life, with a taste for human flesh. Handful of holdouts find shelter in a farmhouse. Claustrophobic, terrifying, gruesome, extreme, and yes, humorous. Followed by "Dawn of the Dead" (1979) and "Day of the Dead" (1985). Romero's directorial debut. Available in a colorized version.